A007417 - cp's OEIS frontend

A007417 If k appears, 3k does not.

n	a(n)
1	1
2	2
3	4
4	5
5	7
6	8
7	9
8	10
9	11
10	13
11	14
12	16
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	28
22	29
23	31
24	32
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	49
38	50
39	52
40	53
41	55
42	56
43	58
44	59
45	61
46	62
47	63
48	64
49	65
50	67
51	68
52	70
53	71
54	72
55	73
56	74
57	76
58	77
59	79
60	80
61	81
62	82
63	83
64	85
65	86
66	88
67	89
68	90
69	91
70	92
71	94
72	95
73	97
74	98
75	99
76	100

[1, 2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 16, 17, 18, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, 49, 50, 52, 53, 55, 56, 58, 59, 61, 62, 63, 64, 65, 67, 68, 70, 71, 72, 73, 74, 76, 77, 79, 80, 81, 82, 83, 85, 86, 88, 89, 90, 91, 92, 94, 95, 97, 98, 99, 100]

cp's OEIS Frontend

A007417 If k appears, 3k does not.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	5
5	7
6	8
7	9
8	10
9	11
10	13
11	14
12	16
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	28
22	29
23	31
24	32
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	49
38	50
39	52
40	53
41	55
42	56
43	58
44	59
45	61
46	62
47	63
48	64
49	65
50	67
51	68
52	70
53	71
54	72
55	73
56	74
57	76
58	77
59	79
60	80
61	81
62	82
63	83
64	85
65	86
66	88
67	89
68	90
69	91
70	92
71	94
72	95
73	97
74	98
75	99
76	100

n	a(n)
1	1
2	2
3	4
4	5
5	7
6	8
7	9
8	10
9	11
10	13
11	14
12	16
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	28
22	29
23	31
24	32
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	49
38	50
39	52
40	53
41	55
42	56
43	58
44	59
45	61
46	62
47	63
48	64
49	65
50	67
51	68
52	70
53	71
54	72
55	73
56	74
57	76
58	77
59	79
60	80
61	81
62	82
63	83
64	85
65	86
66	88
67	89
68	90
69	91
70	92
71	94
72	95
73	97
74	98
75	99
76	100

n	a(n)
1	1
2	2
3	4
4	5
5	7
6	8
7	9
8	10
9	11
10	13
11	14
12	16
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	28
22	29
23	31
24	32
25	34
26	35
27	36
28	37
29	38
30	40
31	41
32	43
33	44
34	45
35	46
36	47
37	49
38	50
39	52
40	53
41	55
42	56
43	58
44	59
45	61
46	62
47	63
48	64
49	65
50	67
51	68
52	70
53	71
54	72
55	73
56	74
57	76
58	77
59	79
60	80
61	81
62	82
63	83
64	85
65	86
66	88
67	89
68	90
69	91
70	92
71	94
72	95
73	97
74	98
75	99
76	100